Measurements of birefringence correlation length performed on long single-m
ode telecommunication fibers are reported. The proposed technique relies on
the statistical properties of the backscattered-field polarization, which
was measured by means of a polarization-sensitive optical time-domain refle
ctometer. Experimental results are reported that show good agreement with t
he underlying theory based on stochastic differential equations. (C) 2001 O
ptical Society of America.